Why Basic Strategy Says No to Blackjack Insurance

What insurance actually is

Insurance is the most misunderstood bet on a blackjack table, and the misunderstanding costs Australian players money every night. When the dealer shows an ace, they pause and offer insurance before checking the hole card. You can put up to half your original wager on the side bet. If the dealer has a ten underneath, the insurance pays 2 to 1 and your main hand loses. If they don't, you lose the insurance and play continues.

The reason the payout sounds generous is that it is deliberately pitched at the true odds of a ten being in the hole. In a single deck that would be roughly fair. With six or eight decks, as used on most Australian tables, the maths tilts firmly toward the house. Casinos offer it because it is profitable, not because it protects you.

Some venues now run the version without the hole card, usually called the peek or no-peek rules, and a few have tried even-money payouts instead of 2 to 1. Even money is worse again. If a croupier describes insurance as "protecting your hand", treat that as table patter rather than advice.

Why the chart says decline, every time

On a basic strategy chart for any standard deck count, the insurance box is marked no. That is not caution; it is arithmetic. The dealer has an ace up and you have seen three cards (yours), so the remaining pack contains a known high proportion of tens only if the count is rich — and without counting you cannot know that.

A basic strategy table is built on the cards visible to you, nothing more. That is why it also tells you to hit a hard 16 against a dealer's ten, split eights against a nine, and never take insurance. Follow the chart without exceptions and the house edge on a decent six-deck game sits around 0.5 per cent, which is among the lowest of any game on the floor.

The one honest exception

The only defensible time to take insurance is as a cover bet if you are counting cards and the running count is genuinely high — a true count of plus three or better on a typical game. That is a specialist skill, and venues in Sydney, Melbourne and Perth watch for it. For anyone playing for entertainment, the correct answer is the same at every table: wave it away.

A volunteer at a Hobart casino charity night once described watching a punter insure a 20 against an ace. The dealer turned over a ten and paid the insurance while collecting the 20. It felt like a win and was, in fact, a break-even outcome on a bet that loses more often than it wins.

Building a strategy you'll actually use

Print a one-page strategy chart and keep it in your pocket. Australian casinos generally permit a player to consult a basic strategy card at the table — it is not considered cheating, and the pit rarely objects. A laminated card from a specialist shop costs a few dollars and is worth more than any tip book.

Learn the chart in blocks rather than all at once. Start with hard totals against a dealer's two through six, which is where most money is won or lost. Then add soft hands, then pairs. Most players memorise the splitting rules last because they come up least often, but getting eights and aces right matters.

Table rules vary, so check them before you sit down. Some Australian tables pay 6 to 5 on a natural rather than 3 to 2, which adds well over a per cent to the house edge. A table that stands on soft 17 is better for you than one that hits. If the game is dealt from a continuous shuffler, the chart stays exactly the same — you just cannot count.

Slots apps and the strategy-free zone

The same discipline is worth applying when you move away from the tables. Pokies are pure chance, so there is no strategy chart to learn, but there are decisions about which app or machine to use. If you have an Australian pokies app on your phone, check the advertised return-to-player before you deposit; anything below about 94 per cent is a poor deal compared with a table game.

The pattern is familiar from online casino slots for real money, where the initial offer looks generous and the fine print sets turnover requirements. A reader in Brisbane recently worked out that a "free" bonus would need tens of thousands of dollars in spins to clear. The maths on a strategy chart and the maths on a bonus are the same kind of exercise.

Blackjack rewards a little preparation. Learn the chart, decline insurance, choose a table with sensible rules, and the game becomes one of the cheapest forms of entertainment in the building. That is a better result than any side bet will ever give you.